INTERNATIONAL 4900 1991: SUSPENSION:REAR:SPRINGS:AIR SUSPENSION SYSTEM

Make : INTERNATIONAL Model : 4900 Year : 1991
Build Dates : 1990-01-01 - 1993-03-01
NHTSA CAMPAIGN ID Number : 93V092000
Date Owner's Notified: 1993-06-01 Date Received by ODI: 1993-05-21 Date Added to Database: 1993-05-27
Manufacturers Involved: INTERNATIONAL TRUCK & ENGINE CORPORATION
Manufacturer's Responsible for the Recall:
Manufacturer Campaign Number:
Component: SUSPENSION:REAR:SPRINGS:AIR SUSPENSION SYSTEM
Potential Number Of Units Affected : 193
Summary:
      THE PRESSURE RELIEF VALVE WAS OMITTED IN THE AIR TANK. THE AIR TANK IS THE RESERVOIR FOR THE AIR SUSPENSION AND IS NOT BRAKE RELATED. WITHOUT THE PRESSURE RELIEF VALVE, THERE IS NO BACK-UP SYSTEM TO LIMIT AIR PRESSURE IN THE AIR SUSPENSION SYSTEM.
Consequence:
      LACK OF A BACK-UP SYSTEM TO LIMIT AIR PRESSURE BUILD UPCAN CAUSE EXCESSIVE PRESSURE IN THE AIR TANK AND CAN CAUSE THE TANK TO RUPTURE.THIS CAN RESULT IN PERSONAL INJURY TO ANYONE IN THE VICINITY.
Remedy:
      INSTALL A PRESSURE RELIEF VALVE IN THE AIR TANK.
Report Initiator: MFR V Report
Regulation Part Number: Federal Motor Vehicle Safety Standard Number:
Notes:
      SYSTEM: SUSPENSION.VEHICLE DESCRIPTION: SCHOOL BUSES: MODELS 4700 AND 4900; HEAVY TRUCKS: MODELS3600, 3700, 3800, AND 3900FG; INCOMPLETE CHASSIS: MODEL 1652SC.